diff mbox series

[S17,10/17] ice: Remove unnecessary wait when disabling/enabling Rx queues

Message ID 20190228232603.32156-11-anirudh.venkataramanan@intel.com
State Accepted
Delegated to: Jeff Kirsher
Headers show
Series Implementation updates for ice | expand

Commit Message

Anirudh Venkataramanan Feb. 28, 2019, 11:25 p.m. UTC 
From: Brett Creeley <brett.creeley@intel.com>

In ice_vsi_ctrl_rx_rings() we are unnecessarily waiting for
QRX_CTRL_QENA_REQ and QRX_CTRL_QENA_STAT to be the same value prior to
disabling each Rx queue. There is no reason to do this so remove
this wait loop as we already have a wait loop after disabling/enabling
the Rx queue through the QRX_CTRL register to make sure it gets
successfully disabled/enabled.

Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_lib.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

Comments

Bowers, AndrewX March 8, 2019, 12:34 a.m. UTC | #1 
> -----Original Message-----
> From: Intel-wired-lan [mailto:intel-wired-lan-bounces@osuosl.org] On
> Behalf Of Anirudh Venkataramanan
> Sent: Thursday, February 28, 2019 3:26 PM
> To: intel-wired-lan@lists.osuosl.org
> Subject: [Intel-wired-lan] [PATCH S17 10/17] ice: Remove unnecessary wait
> when disabling/enabling Rx queues
> 
> From: Brett Creeley <brett.creeley@intel.com>
> 
> In ice_vsi_ctrl_rx_rings() we are unnecessarily waiting for
> QRX_CTRL_QENA_REQ and QRX_CTRL_QENA_STAT to be the same value
> prior to disabling each Rx queue. There is no reason to do this so remove this
> wait loop as we already have a wait loop after disabling/enabling the Rx
> queue through the QRX_CTRL register to make sure it gets successfully
> disabled/enabled.
> 
> Signed-off-by: Brett Creeley <brett.creeley@intel.com>
> Signed-off-by: Anirudh Venkataramanan
> <anirudh.venkataramanan@intel.com>
> ---
>  drivers/net/ethernet/intel/ice/ice_lib.c | 10 ++--------
>  1 file changed, 2 insertions(+), 8 deletions(-)

Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
diff mbox series

Patch

diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c
index 4c6ecc25aaa0..8e0a23e6b563 100644
--- a/drivers/net/ethernet/intel/ice/ice_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_lib.c
@@ -197,19 +197,13 @@  static int ice_vsi_ctrl_rx_rings(struct ice_vsi *vsi, bool ena)
 {
 	struct ice_pf *pf = vsi->back;
 	struct ice_hw *hw = &pf->hw;
-	int i, j, ret = 0;
+	int i, ret = 0;
 
 	for (i = 0; i < vsi->num_rxq; i++) {
 		int pf_q = vsi->rxq_map[i];
 		u32 rx_reg;
 
-		for (j = 0; j < ICE_Q_WAIT_MAX_RETRY; j++) {
-			rx_reg = rd32(hw, QRX_CTRL(pf_q));
-			if (((rx_reg >> QRX_CTRL_QENA_REQ_S) & 1) ==
-			    ((rx_reg >> QRX_CTRL_QENA_STAT_S) & 1))
-				break;
-			usleep_range(1000, 2000);
-		}
+		rx_reg = rd32(hw, QRX_CTRL(pf_q));
 
 		/* Skip if the queue is already in the requested state */
 		if (ena == !!(rx_reg & QRX_CTRL_QENA_STAT_M))